According to my old biology book 2 terms include snow forest and Tagia
I see half of it and what are you working on?
Bubbles are Carbon Dioxide
Oxegyn in the tank
The third option: Increase the intensity of cardiovascular workouts, is the right one. we know this because the rest of the options don't give the right fit. anaerobic workout is a short burst of energy, so it wouldn't be a good fit. Doing fewer aerobic workouts would lower it even more. Decreasing intensity of a cardiovascular workout would also cause a larger decrease. so it is the third option. Hope this helps a lot.